Museum bonus level
To get this level you have to beat the game. In the museum is every gun and vehicle in the game. The vehicles can't be drove. Plus there is a gun from call of duty 4 in the room you spawn in go left to the last guy in the first exhibit knife him and he will drop the shotgun w1200. The only way to beat this level is if you press the red button in both rooms and kill everybody after you press the red button. If you try to kill anyone before you press the button the wave will not count. For people who have never played museum before the red button brings everyone from that room alive. Plus you can't change the difficulty it's either on hard or vetran.
Added by: firekllr Mar 29th 2011, ID#3779